Batch Upload Images

Info on the Gallery CMS website mentions "Provides a powerful engine for uploading and managing galleries of images, with the ability to BATCH UPLOAD, add/delete/rearrange/ images, group galleries into albums, and more."
I can only see how to upload one image at a time. Please point me in the right direction.

Dim Photo As New PhotoManager.Photo
Photo.Album = PhotoAlbum
If Not String.IsNullOrEmpty(Photo.Album) Then
Photo.FromUrl(ImageUrl) 'In alternative you can load a photo from stream
'Photo.FromStream(Stream) 'You must first open the file and create a stream object
Photo.Title(SubSite.Language) = Author
Photo.Description(SubSite.Language) = Title
Photo.Save()
PhotoID = Photo.NameCode()
Photo.Dispose()
End If